1. Two-dimentional Forces

In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force FA of magnitude 220 N, and Charles pulls with force FC of magnitude 177 N. Note that the direction of FC is not given. What is the minimum magnitude of Betty's force FB ?[IMG]file:///C:/DOCUME%7E1/GBLPUB%7E1/LOCALS%7E1/Temp/moz-screenshot-2.png[/IMG] There is a 149 degree angle between Alex and Betty.[IMG]file:///C:/DOCUME%7E1/GBLPUB%7E1/LOCALS%7E1/Temp/moz-screenshot.png[/IMG][IMG]file:///C:/DOCUME%7E1/GBLPUB%7E1/LOCALS%7E1/Temp/moz-screenshot-1.png[/IMG]

2. Originally Posted by BiGpO6790
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force FA of magnitude 220 N, and Charles pulls with force FC of magnitude 177 N. Note that the direction of FC is not given. What is the minimum magnitude of Betty's force FB ?[IMG]file:///C:/DOCUME%7E1/GBLPUB%7E1/LOCALS%7E1/Temp/moz-screenshot-2.png[/IMG] There is a 149 degree angle between Alex and Betty.[IMG]file:///C:/DOCUME%7E1/GBLPUB%7E1/LOCALS%7E1/Temp/moz-screenshot.png[/IMG][IMG]file:///C:/DOCUME%7E1/GBLPUB%7E1/LOCALS%7E1/Temp/moz-screenshot-1.png[/IMG]
You seem to have posted all your homework questions on this topic. MHF does provide that sort of service. Please show some effort with these questions. What have you tried? Where do you get stuck?

And your attempt to attach the image has failed.